Rivian R1S tires
The Rivian R1S runs one fitment, 275/55 R21 116H XL. XL is not optional here; it is what the car was type approved on. The Rivian R1T takes the same size.
Every fitment
| Generation | Trim | Wheel | Tire size | Load index | Speed | Construction | Marking | Pressure |
|---|---|---|---|---|---|---|---|---|
| Current | Adventure (21in) | 21in | 275/55 R21 | 116 | H | XL | none | see plate |
Your own placard is the authority. You will find it on the on the driver's door jamb, on the B-pillar. Where it disagrees with this page, it wins. Match or exceed the size, load index, speed rating and construction class it gives, and use its pressure figure rather than anything printed on the tire.
What changes on this car
Load index 116 on the 21 inch wheel is 1,250kg per tire, the highest on this site. The R1S is a three-row SUV built to tow and to leave the road, and it is heavy before it does either.
The 22 inch wheel is deliberately missing from this page. Michelin lists both a 275/50 R22 115H XL and a 116H HL against it, and Rivian's own branded factory tire is the HL one. Only the door label on the car says which yours needs, so check it before buying for 22s.
No tires listed against this fitment yet. Product specifications are published from each manufacturer's own data and that work is not finished for 275/55 R21. Match or exceed every figure in the table above and you cannot go far wrong.
Where these figures come from
- Michelin's US vehicle fitment tool, michelinman.com (2024 R1S Adventure, 275/55R21 XL 116H): https://www.michelinman.com/auto/browse-tires/by-vehicle/2024/rivian/r1s/adventure/275---55R21---XL-116H
- Michelin's US vehicle fitment tool, michelinman.com (2022 R1S Adventure, 275/55R21 XL 116H): https://www.michelinman.com/auto/browse-tires/by-vehicle/2022/rivian/r1s/adventure/275---55R21---XL-116H
Every figure here comes from one tire maker's own fitment data, checked across different years or trims. That is a second look rather than a second opinion, so check the label on your door jamb before you buy.
Other cars on the same size
Common questions
- What size tires does the Rivian R1S take?
- It runs 275/55 R21. The exact fitment for your car is on On the driver's door jamb, on the B-pillar.
- Can I fit a cheaper tire to a Rivian R1S?
- Only at 275/55 R21 116H XL or better. That is the figure to hold: a tire below the load index, the speed rating or the construction class is not a cheaper one, it is the wrong one.